Logical units and target ports on Hitachi HUS 100 family systems
The Hitachi HUS 100 family system has a maximum LUN size of 128 TB.
LUNs
A volume is referenced by the ID or the name of the H-LUN.
The Hitachi HUS 100 family can export 2048 - 4096 LUNs per system to the Storwize® V3500 system. The Storwize V3500 system supports greater than 2 TB LUNs.
LUN IDs
The Hitachi HUS 100 family systems identify exported logical units through SCSI identification descriptor type 3. The 64-bit NAA IEEE Registered Extended Identifier (NAA=5) for the logical unit is in the form 5-OUI-VSID. The HDS IEEE company ID is 000E8. The remaining part of the company ID is a vendor-specific ID.
:~ # lsmdisk 2
id 2
name mdisk3
status online
mode managed
mdisk_grp_id 2
mdisk_grp_name HUS_grp
capacity 20.0GB
quorum_index 0
block_size 512
controller_name HUS_2B
ctrl_type 4
ctrl_WWNN 50060E80105D6039
controller_id 0
path_count 2
max_path_count 2
ctrl_LUN_# 0000000000000002
<HLUN>
UID 60060e80105d603005705e930000000300000000000000000000000000000000
<HDS >< Serial No ><Volume>
preferred_WWPN
active_WWPN 50060E80105D6033
fast_write_state empty
raid_status
raid_level
redundancy
strip_size
spare_goal
spare_protection_min
balanced
tier generic_hdd
:~ #
Complete the required action on the volume: select
.LUN creation and deletion
Volumes and their corresponding logical units (H-LUNSs) are created, modified, or deleted through the browser. Volumes are formatted to all zeros upon creation.
Volumes are created in a RAID group or a dynamic provisioning (DP) pool. In the GUI, select Create Volume.
. From RAID Groups/DP Pools, select the required . From here, you can selectAdditionally, a host group can be created and assigned during this process. Partitions are exported as volumes with a logical unit number (H-LUN) either manually or automatically assigned to the partition. For the Storwize V3500 system, one LUN per RAID array is normal.
- Unmap the volume: Select
Host Group Property choose; <name> select; Ports, to select all ports select; Forced set to all available ports Second Tab; Volumes select, remove the volume and confirm
and then select a
port of the host group. Select edit host group: - Complete the required action on the volume. Select Volume Tab, select the volume, and then delete or change. . Select
- Make sure that the MDisk is unmanaged (removed from any storage pool) on the Storwize V3500 system before you delete the LUN on the Hitachi HUS 100 family SAN storage system.
- Do not expand dynamic arrays on LUNs that are in use by the Storwize V3500 system. For the system to recognize arrays, the MDisk must first be made unmanaged by migrating or deleting the LUN from the storage pool.
LUN presentation
LUNs are exported through the available FC ports of the Hitachi HUS 100 family storage system. Configure these ports by host group.
Special LUNs
There are no special considerations for logical unit numbering. LUN 0 can be exported where necessary.
Target ports
A Hitachi HUS 100 family storage system has a total of eight Fibre Channel ports.
id controller_name ctrl_s/n vendor_id product_id_low product_id_high
0 HUS_2B 912503230001 2B HITACHI DF600F
1 HUS_1B 912503230001 1B HITACHI DF600F
2 controller0 912503230001 1A HITACHI DF600F
3 controller1 912503230001 1C HITACHI DF600F
4 controller2 912503230001 2A HITACHI DF600F
5 controller3 912503230001 1D HITACHI DF600F
6 controller4 912503230001 2C HITACHI DF600F
7 controller5 912503230001 2D HITACHI DF600F
lscontroller 0
id 0
controller_name HUS_2B
WWNN 50060E80105D6039
mdisk_link_count 19
max_mdisk_link_count 19
degraded no
vendor_id HITACHI #
product_id_low DF600F
product_id_high
product_revision 0000
ctrl_s/n 912503230001 2B
allow_quorum yes
WWPN 50060E80105D6039
path_count 6
max_path_count 18
evt110934:~ #
500060E8MMSSSSPP
50 - NAA format 5, Vendor responsible for address
0060E8 - ieee unique VSID of Hitachi Computer Products (America), inc.
MM - model range
SSSS - Hex for serial number
PP - Port Number
LU access model
All systems are Active/Active. To avoid an outage from system failure, cross connect the ports across Fibre Channel switches. Because all model Hitachi HUS 100 family storage systems are equal in priority, there is no benefit to using an exclusive set for a specific LU.
LU grouping
LU grouping does not apply to Hitachi HUS 100 family systems.
LU preferred access port
There are no preferred access ports on the model Hitachi HUS 100 family as all ports are Active/Active across all systems.
LUN security
LUN Security enables LUN masking by the worldwide node name (WWNN) of the initiator port. This function is supported for logical units (LUs) that Storwize V3500 systems use.
Detecting Ownership
Detecting ownership does not apply to model Hitachi HUS 100 family storage arrays.